What caught Leonard's attention was a vague bas-relief on the cliff that seemed to have been eroded by wind and sand. If he hadn't had the [Detailed Observation (R)] card, he would have definitely overlooked these ruins.
After getting off the vehicle to investigate, Leonard discovered that the blurry bas-reliefs seemed to depict several people. Judging by the size difference among them, it was possible that the sculpture was associated with the Pharaoh.
This judgment was made because the sizes of sculptures made by ancient Egyptians were based on a person's status. The bigger the difference in status, the bigger the difference in the size of the sculptures.
By comparing the largest and smallest sculptures in the image, it was highly likely that the stone carvings on the rock had the image of a Pharaoh.